Changing Organizer of a Meeting

I have searched the help blogs of Zimbra and not having any luck finding what I need, but that could be because I am not searching for the correct item or I am labeling it wrong. Here is what I have:

I schedule a meeting in Zimbra and invite attendees. I believe I end up being the organizer or scheduler of the meeting ( I am not sure if I am called the organizer or the scheduler) and my name is grayed out or not selectable in the list of attendees. If after the meeting is scheduled and I can not attend, but I don't want to be the scheduler or organizer anymore...How do I delegate someone else to be the organizer or scheduler of the meeting?

Can you point me in the right direction of documentation on how to accomplish this.